<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Document</title>
</head>
<body>
    <ol></ol>
    <ol></ol>
    <ol></ol>
    <script>
        var arr = [
            [1,2,3,4],
            ['k','w','e','r'],
            ['哈哈','哈哈哈',"哈哈哈哈"],
        ]
        var ol = document.querySelectorAll('ol');
        for(var i=0; i<ol.length; i++){
            for(var j=0; j<arr[i].length; j++){
                ol[i].innerHTML+="<li>"+arr[i][j]+"</li>";
            }
        }
    </script>
</body>
</html>